A sample of students was studied to determine the relationship between sleeping habits and classroom performance. The least-squares regression line for predicting the score on a standardized exam from hours of sleep was computed to be

̂y = 35.6 + 6.8x, where x is the number of hours of sleep and ̂y is the predicted exam score. The number of hours of sleep among the students in the sample ranged from 5 to 8.

Should a prediction for the exam score be made for a student who slept for 10 hours? Why or why not?